#[non_exhaustive]pub enum SchedulerType {
Slurm,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against SchedulerType
, it is important to ensure
your code is forward-compatible. That is, if a match arm handles a case for a
feature that is supported by the service but has not been represented as an enum
variant in a current version of SDK, your code should continue to work when you
upgrade SDK to a future version in which the enum does include a variant for that
feature.
Here is an example of how you can make a match expression forward-compatible:
# let schedulertype = unimplemented!();
match schedulertype {
SchedulerType::Slurm => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when schedulertype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant SchedulerType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
SchedulerType::Unknown(UnknownVariantValue("NewFeature".to_owned()))
and calling as_str
on it yields "NewFeature"
.
This match expression is forward-compatible when executed with a newer
version of SDK where the variant SchedulerType::NewFeature
is defined.
Specifically, when schedulertype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on SchedulerType::NewFeature
also yielding "NewFeature"
.
Explicitly matching on the Unknown
variant should
be avoided for two reasons:
- The inner data
UnknownVariantValue
is opaque, and no further information can be extracted. - It might inadvertently shadow other intended match arms.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Slurm
Unknown(UnknownVariantValue)
Unknown
. See the docs on this enum for the correct way to handle unknown variants.Unknown
contains new variants that have been added since this code was generated.
Implementations§
Source§impl SchedulerType
impl SchedulerType
Source§impl SchedulerType
impl SchedulerType
Sourcepub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
pub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
Parses the enum value while disallowing unknown variants.
Unknown variants will result in an error.
Trait Implementations§
Source§impl AsRef<str> for SchedulerType
impl AsRef<str> for SchedulerType
Source§impl Clone for SchedulerType
impl Clone for SchedulerType
Source§fn clone(&self) -> SchedulerType
fn clone(&self) -> SchedulerType
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moreSource§impl Debug for SchedulerType
impl Debug for SchedulerType
Source§impl Display for SchedulerType
impl Display for SchedulerType
Source§impl From<&str> for SchedulerType
impl From<&str> for SchedulerType
Source§impl FromStr for SchedulerType
impl FromStr for SchedulerType
Source§impl Hash for SchedulerType
impl Hash for SchedulerType
Source§impl Ord for SchedulerType
impl Ord for SchedulerType
Source§fn cmp(&self, other: &SchedulerType) -> Ordering
fn cmp(&self, other: &SchedulerType) -> Ordering
1.21.0 · Source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
Source§impl PartialEq for SchedulerType
impl PartialEq for SchedulerType
Source§impl PartialOrd for SchedulerType
impl PartialOrd for SchedulerType
impl Eq for SchedulerType
impl StructuralPartialEq for SchedulerType
Auto Trait Implementations§
impl Freeze for SchedulerType
impl RefUnwindSafe for SchedulerType
impl Send for SchedulerType
impl Sync for SchedulerType
impl Unpin for SchedulerType
impl UnwindSafe for SchedulerType
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